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Trajectories Nutrient Dataset for Nitrogen (TREND-Nitrogen)

dataset
posted on 2022-09-05, 01:38 authored by Danyka K. ByrnesDanyka K. Byrnes, Kimberly Van MeterKimberly Van Meter, Nandita B. Basu

In this dataset, we synthesize crop production, fertilizer use, population, and atmospheric deposition data to provide county-scale nitrogen (N) fluxes for the contiguous U.S. (1930-2017). The following components of the N mass balance are included: crop N uptake, biological N fixation, N fertilizer, manure N, human N waste, and the total N surplus (net N inputs). Multiple sources were used to construct the dataset, including the U.S. Census of Agriculture, the United States Geological Survey, the National Atmospheric Deposition Program, and the U.S. Census Bureau. Annual-scale data is provided based on gap-filling and data-fusion techniques. The dataset is designed to facilitate multi-decadal investigations of anthropogenic N dynamics across the U.S. in the context of long-term changes in agricultural management and land use. 

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